SERVICE BULLETIN REVISION TRANSMITTAL SHEET

**AIRBUS CUSTOMER SERVICES DIRECTORATE**  **1 Rond Point Maurice Bellonte 31707 BLAGNAC CEDEX FRANCE**  **Tel : (33) 5 61 93 33 33 Telex : AIRBU 530526F**  **Fax : (33) 5 61 93 42 51** M A N DA T

O RY M A N DA T

O RY M A N DA TO RY M A N D A

TO RY **ATA SYSTEM : 32 TITLE : LANDING GEAR - NORMAL BRAKING - INSTALL BSCU STD 10 BY SB ONLY.**  **MODIFICATION No. :** 27773P5518, 31106P7005, 32500P7810, 36994P8867 This page transmits Revision No. 01 of Service Bulletin No. A320-32-1336. A D D I T I O N A L WO R K No additional work is required by this revision for aircraft modified by any previous issue. R E A S O N Revision 01 is issued to add aircraft on which Mod. No. 22129J0719 (LANDING GEAR - MLG - REPLACE BOGIE WITH TWIN WHEEL) is embodied and to refresh the effectivity. C H A N G E S SUMMARY : - EFFECTIVITY

. Operators updated. PLANNING INFORMATION : - EFFECTIVITY

. Para. 1.A. Aircraft MSN 0018 deleted for operator BAW. Aircraft MSN 0163 added for operator JET. Aircraft MSN 0164 and 0169 added for operator ALK. Aircraft MSN 0168 and 0179 added for operator IAC. Aircraft MSN 0193 added for operator MYT. Effectivity updated. - COMPLIANCE

. Para. 1.E. Accomplishment timescale updated. F I L I N G I N S T R U C T I O N S This Service Bulletin has been generated electronically and is reissued as a complete document. Replace the complete document. Put this Revision Transmittal Sheet in front of the Service Bulletin. DATE : Sep 19/07 SERVICE BULLETIN No. : A320-32-1336

REVISION No. : 01 - Jan 10/08 Page : 1 of 2 Printed in France © AIRBUS 2007 All rights reservedSERVICE BULLETIN REVISION TRANSMITTAL SHEET

H I S T O R Y O F P R E V I O U S R E V I S I O N S No previous revisions. R E V I S I O N S E Q U E N C E ORIGINAL : Sep 19/07 REVISION No. : 01 - Jan 10/08

DATE : Sep 19/07 SERVICE BULLETIN No. : A320-32-1336

REVISION No. : 01 - Jan 10/08 Page : 2 Printed in France © AIRBUS 2007 All rights reservedSERVICE BULLETIN SUMMARY

**AIRBUS CUSTOMER SERVICES DIRECTORATE**  **1 Rond Point Maurice Bellonte 31707 BLAGNAC CEDEX FRANCE**  **Tel : (33) 5 61 93 33 33 Telex : AIRBU 530526F**  **Fax : (33) 5 61 93 42 51** This summary is for information only and is not approved for modification of the aircraft M A N DA T

O RY M A N DA T

O RY M A N DA TO RY M A N DA TO RY **ATA SYSTEM : 32 TITLE : LANDING GEAR - NORMAL BRAKING - INSTALL BSCU STD 10 BY SB ONLY.**  **MODIFICATION No. :** 27773P5518, 31106P7005, 32500P7810, 36994P8867 R E A S O N /D E S C R I PT I O N /O P E R A T I O N A L C O N S E Q U E N C E S In the recent past years, some operators have reported cases of loss of braking efficiency during landing in normal braking mode with the Autobrake mode selected beforehand. For some cases it was found that for some main landing gear tires, the actual rolling radius was smaller than the Braking and Steering Control Unit (BSCU) datum, affecting the braking efficiency at low speed. Two other cases of loss of braking efficiency were due to a lack of Autobrake selection logics robustness. In 2005 a lateral runway excursion occurred on an A320 aircraft. Investigation has shown that the aircraft landed with the nose wheels at around 20 degrees. During subsequent tests on the removed BSCU, a BSCU hardware failure was found, affecting the monitoring function, including the system reconfiguration management. This Service Bulletin is issued to improve operation of the braking and steering systems on aircraft equipped with conventional BSCU : - Standard 7 (PN C20216332292C) - Standard 9 (PN C202163372D32) - Standard 9.1 (PN C202163382D32) This Service Bulletin is published to advise all operators of A319, A320 and A321 aircraft equipped with conventional BSCU of the issue of MESSIER-BUGATTI Service Bulletin No. C20216-32-3289. This Service Bulletin requires incorporation of software changes by modifying the On Board Replaceable Modules (OBRMs) of the BSCU. This BSCU will be modified and re-identified with new PN C202163392E34. This new version is obtained either by replacement of the OBRMs or replacement of the BSCU.
DATE : Sep 19/07 SERVICE BULLETIN No. : A320-32-1336

REVISION No. : 01 - Jan 10/08 Page : 1 of 5 Printed in France © AIRBUS 2007 All rights reservedSERVICE BULLETIN SUMMARY

NOTE : For the aircraft listed in the effectivity of this Service Bulletin but not fitted with a conventional BSCU, the operator shall refer to Service Bulletin No. A320-32-1335 (Mod. No. 36853P9655) introducing BSCU Standard L4-9 (PN E21327005). Accomplishment of this Service Bulletin consists in introducing a new BSCU version (Standard 10) which includes the following improvements : - improvements of the BSCU hardware failure monitoring including system reconfiguration management, - robustness improvements of the BSCU/tyre compatibility to restore margin in the frame of the correction of the loss of braking efficiency at low speed, - braking system re-configuration in case of an open-circuit detected on one normal brake servo-valve, - consolidation of the steering disconnection logic, allowing cancellation of Flight Crew Operating Manual (FCOM) TR 746, - robustness improvement of the Autobrake selection logics, - Autobrake logic improvement :

. Increased disconnection threshold of A/B LOW and MED modes with one pedal depressed. . Inhibition of A/B MAX engagement on ground at low speed. . Inhibition of A/B MAX selection in flight. - modification of the allowable maximal deceleration in case the 3 Air Data/Inertial Reference Unit (ADIRU)’s are not available, - correction of the Autobrake loss at touch down in case of spurious landing gear lever information, - rewording of some BITE messages, - other minor changes. Installation of BSCU Standard 10 allows cancelling FCOM TR 746 if not already cancelled by Mod. No. 35249J2649 (Service Bulletin No. A320-32A1293) embodiment.

EVALUATION TABLE COMPLIANCE Mandatory CANCELS INSPECTION SB No
AD Yes A/C OPERATION AFFECTED Yes RELIABILITY AFFECTED No PAX COMFORT AFFECTED No COST SAVING No ETOPS AFFECTED No

DATE : Sep 19/07 SERVICE BULLETIN No. : A320-32-1336

REVISION No. : 01 - Jan 10/08 Page : 2 Printed in France © AIRBUS 2007 All rights reservedSERVICE BULLETIN SUMMARY

EVALUATION TABLE STRUCTURAL LIFE EXTN No VENDOR SB INVOLVED Yes KIT PRICE (USD) No Kit

MODIFICATION CLASSIFICATION

MAJOR 27773P5518 31106P7005 32500P7810 36994P8867 MINOR None
As per EASA IR 21, a minor change is one that has no appreciable effect on the mass, balance, structural strength, reliability, operational characteristics affecting the airworthiness of the product. All other changes are major changes. **E F**  **F E**  **C T**  **I V**  **I T** **Y** This Service Bulletin is applicable to these operators : 03X 31X 39Z 47W 53Z 57W 66X 83Y AAF AAR ABQ ABY ACA ACI ADR AFL AFR AHY AIJ AJM ALK AMC AMU ANA ATC AUA AWE AZA BAW BGH BIE BKP BLM BMA BMM BRS BST BTV BWG CCA CCM CES CIB CLI CQH CQN CSA CSC CSN CSZ CTN CYP D2F DAT DCS DGA DKN DLH DNJ EDW EEZ EIN ETD F2I FCA FFT FHY FIN FOM G4I GBL GFA GOW GWI GWY GXL HDA HEJ HVN IAC IBE INX IRM ISS IWD JAV JBU JCS JET JKK JSA JST KAC KBR KKK KYV KZR LAJ LAN LBT LFO LTC LTE LTU LVG MAU MDL MEA MLD MNJ MON MPD MPH MSR MXA MYT MYW NKS NLY NVR NWA OHY P2C P2G PAL PTI QAF QTR R1T RAM RBA RJA RNV RYW RZO SAS SBI SDM SHJ SKB SLK SSV SVR SWR SYR TAE TAI TAM TAP TAR TAS TCW TCX TGW THY TNA UAL UDC UEA USA VBW VIM VKG VLE VLG VLK VLU VOI VUN WGT WHT WZZ XLF This modification is applicable by Service Bulletin only. C O N C U R R E N T R E Q U I R E M E N T S Accomplishment of this Service Bulletin requires the prior or simultaneous accomplishment of the following Service Bulletin or the equivalent production modification : Service Bulletin No. A320-32-1124 Mod. No. 24449P3588 DATE : Sep 19/07 SERVICE BULLETIN No. : A320-32-1336

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R E F E R E N C E S/ R E P E R C U S S I O N S TFU : 32.42.34.048 32.46.00.001 32.51.00.021 OEB : None AOT : None SIL : None LIFE LIMIT : None LINE MAINTENANCE AFFECTED : No OTHERS : FCOM TR 746 N A T U R E O F T H E WO R K AIRCRAFT : NO EQUIPMENT : YES HARD : NO SOFT : YES OBRM : YES M A N P OW E R Config. 01, on aircraft

**TOTAL MANHOURS 2.5 ELAPSED TIME (HOURS) 2.5**  Config. 01, on computer

**TOTAL MANHOURS Refer to MESSIER-BUGATTI Service Bulletin No. C20216-32-3289**  **ELAPSED TIME (HOURS) Refer to MESSIER-BUGATTI Service Bulletin No. C20216-32-3289**  M A T E R I A L I N F O R M A T I O N AIRCRAFT DATA None DATE : Sep 19/07 SERVICE BULLETIN No. : A320-32-1336

REVISION No. : 01 - Jan 10/08 Page : 4 Printed in France © AIRBUS 2007 All rights reservedSERVICE BULLETIN SUMMARY

A P P E N D I C E S None

DATE : Sep 19/07 SERVICE BULLETIN No. : A320-32-1336

REVISION No. : 01 - Jan 10/08 Page : 5 Printed in France © AIRBUS 2007 All rights reservedSERVICE BULLETIN

**AIRBUS CUSTOMER SERVICES DIRECTORATE**  **1 Rond Point Maurice Bellonte 31707 BLAGNAC CEDEX FRANCE**  **Tel : (33) 5 61 93 33 33 Telex : AIRBU 530526F**  **Fax : (33) 5 61 93 42 51** M A N DA T

O RY M A N DA T

O RY M A N DA TO RY M A N DA TO RY **ATA SYSTEM : 32 TITLE : LANDING GEAR - NORMAL BRAKING - INSTALL BSCU STD 10 BY SB ONLY.**  **MODIFICATION No. :** 27773P5518, 31106P7005, 32500P7810, 36994P8867 This document contains AIRBUS PROPRIETARY INFORMATION and shall at all times remain the property of AIRBUS; no intellectual property right or licence is granted by AIRBUS in connection with any information contained in it. It is delivered on the express condition that said document and the information contained in it shall be treated as confidential, shall not be used for any purpose other than that for which it is hereby delivered. It shall not be disclosed in whole or in part to third parties and shall not be duplicated in any manner (except for the purposes of performing the tasks described hereunder and provided that any recipient of such document shall comply with the conditions herein), without AIRBUS’ prior written consent. **1. P L**  **A N**  **N I**  **N G**  **I N**  **F O**  **R M**  **A T**  **I O**  **N A. E**  **F F**  **E C**  **T I**  **V I**  **T Y**  (1) Models 319-111 319-112 319-113 319-114 319-115 319-131 319-132 319-133 320-111 320-211 320-212 320-214 320-231 320-232 320-233 321-111 321-112 321-131 321-211 321-212 321-231 321-232 (2) Aircraft (a) Effectivity by MSN This Service Bulletin is applicable to aircraft MSN : 0002-0008 0010 0012-0014 0016 0017 0019-0021 0029 0031 0033-0044 0052-0055 0059 0061-0073 0076-0078 0081-0088 0091 0093 0094 0098-0104 0108-0237 0239-0270 0272-0373 0375-0395 0399-0415 0417-0422 0424-0430 0434-0450 0452-0468 0470-0480 0482-0485 0487-0489 0491 0493-0498 0500-0535 0537-0546 0548-0601 0603-0631 0633-0707 0709-0788 0790-1185 1187-1277 1279-1598 1600-1659 1661-1812 1814-1821 1823-1829 1831-1918 1920-1929 1931-1938 1940-1984 1986-1990 1993-2016 2018-2024 2026-2034 2036 2038-2042 2044-2049 2052 2054-2058 2060 2061 2063-2070 2072-2080 2082-2099 2101-2108 2110 2112-2118 2121-2128 2130-2169 2171-2175 2177-2180 2182 2183 2185 2187 2188 2190-2195 2197-2212 2215-2217 2219-2223 2225-2227 2229 2231-2244 2246-2248 2250 2252-2256 2258-2264 2266 2267 2269 2270 2272-2275 2278 2280 2282 2284-2288 2290 2293-2295 2298 2301-2305 2307 DATE : Sep 19/07 SERVICE BULLETIN No. : A320-32-1336

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2309-2316 2318 2320 2321 2323-2325 2327 2330 2331 2334 2336 2337 2339-2343 2345 2347-2349 2351 2352 2356 2357 2359 2363-2365 2368 2369 2371-2374 2381 2384 2386 2388-2391 2393 2397 2399 2405 2407-2411 2415 2416 2421 2422 2425 2426 2428-2430 2432 2435 2437 2447 2449 2451 2454 2458 2459 2461 2462 2464 2466 2472 2474 2478-2480 2482 2486 2488 2489 2491 2493 2494 2498 2499 2504 2505 2507-2510 2517 2520 2521 2525 2530 2532 2534-2536 2542 2543 2545 2547 2549 2551 2559 2562 2563 2568 2570 2574 2577 2579 2580 2583 2589 2591 2595 2597 2599 2606 2613-2615 2627 2630 2635 2639 2669 2690 NOTE : This Service Bulletin is only applicable to aircraft fitted with conventional BSCU. NOTE : For aircraft listed in the effectivity of this Service Bulletin not fitted with conventional BSCU, refer to Service Bulletin No. A320-32-1335. NOTE : This modification is applicable by Service Bulletin only. NOTE : This Service Bulletin is not applicable to aircraft fitted with DUNLOP tyres 46X16-20 PN 11659 T and PN 11661 T. (b) Effectivity by Operator The Operator/MSN relationship is provided for information only and is correct at the time of issue in accordance with the information available to AIRBUS. Any future changes resulting from transfer of an aircraft from one operator to another will not be reflected in this list unless the Service Bulletin is revised for another reason. OPERATOR MSN 03X 2421 31X 2192 39Z 0956 47W 0764 53Z 1468 57W 1999 66X 1802 83Y 0913 1086 1124 1589 1886 2165 AAF 0244 0558 0561 0808 0823 0888 1006 1451 1846 AAR 1227 1356 1511 1636 1670 1734 2041 2045 2110 2226 2247 2290 2397 2459 ABQ 0394 0443 0760 1008 1199 1218 ABY 2158 2166 2278 2349 DATE : Sep 19/07 SERVICE BULLETIN No. : A320-32-1336

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OPERATOR MSN ACA 0059 0068 0073 0084 0122 0126 0127 0141 0149 0150 0154 0159 0174 0175 0183 0210 0231 0232 0233 0242 0248 0253 0254 0255 0265 0277 0284 0290 0309 0324 0330 0341 0378 0403 0404 0546 0572 0634 0639 0649 0656 0670 0672 0682 0688 0691 0693 0695 0697 0711 0719 0721 0728 0732 0736 0740 0742 0752 0757 0769 0773 0779 0785 0800 0813 0817 0829 0831 0840 0845 1562 1577 1602 1611 1623 1632 1638 1719 1726 1748 1756 1765 1772 1783 1811 1853 1864 1874 1940 1963 2018 2145 ACI 2152 ADR 0043 0113 0114 AFL 2052 2069 2072 2091 2093 2106 2116 2133 2144 2151 2163 2179 2222 2233 2243 2330 2337 2342 AFR 0002 0003 0004 0005 0007 0010 0012 0013 0014 0016 0019 0020 0021 0033 0036 0044 0061 0062 0063 0100 0101 0102 0108 0115 0128 0129 0130 0131 0133 0144 0145 0155 0156 0184 0186 0187 0188 0203 0214 0220 0226 0227 0228 0235 0236 0237 0239 0270 0278 0285 0286 0287 0337 0352 0377 0491 0498 0509 0521 0529 0544 0598 0600 0608 0618 0625 0637 0644 0777 0796 0938 0985 0998 1000 1020 1025 1036 1133 1151 1169 1176 1190 1201 1216 1267 1271 1299 1344 1404 1415 1444 1449 1471 1476 1502 1505 1524 1616 1622 1640 1645 1658 1677 1691 1699 1733 1859 1873 1879 1885 1894 1900 1924 1938 1949 2140 AHY 0331 AIJ 1132 1162 1179 1244 1259 1308 1322 AJM 0422 0624 0626 0628 0666 0775 1213 1390 1503 1747 1905 1966 1988 2048 ALK 0164 0169 0304 0315 0406 AMC 2113 2122 2142 AMU 0557 0597 0620 0631 0805 0908 1758 1790 1850 1893 1912 1926 1962 ANA 0138 0139 0148 0151 0167 0170 0196 0212 0219 0245 0300 0328 0365 0383 0413 0482 0501 0507 0531 0534 0549 0554 0658 0669 0685 0811 1973 2054 2061 ATC 0630 AUA 0552 0570 0581 0768 0776 0797 0920 0935 1137 1150 1189 1387 1458 1478 2131 2174 2262 2416 2494 2547
DATE : Sep 19/07 SERVICE BULLETIN No. : A320-32-1336

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OPERATOR MSN AWE 0052 0053 0054 0055 0064 0065 0066 0067 0076 0077 0081 0082 0091 0098 0099 0317 0448 0527 0543 0565 0584 0661 0762 0770 0803 0856 0866 0889 0924 0931 0953 1003 1043 1049 1050 1056 1064 1075 1079 1083 1088 1110 1111 1116 1166 1178 1196 1223 1234 1274 1281 1284 1323 1350 1373 1375 1395 1397 1406 1410 1419 1463 1490 1527 1534 1547 1552 1563 1565 1576 1621 1643 1644 1710 1764 1792 1844 1935 2193 2302 2312 2359 2405 2422 2430 2458 2482 2570 2595 2613 2615 2630 2669 2690 AZA 0434 0477 0488 0494 0495 0513 0514 0515 0516 0524 0526 0532 0576 0583 0586 0593 0599 0765 0819 0848 0940 0951 0959 0999 1138 1168 1217 1220 1226 1448 1457 1473 1480 1489 1722 1740 1745 1770 1779 2033 2057 2074 2083 2086 2101 2127 BAW 0006 0008 0017 0039 0042 0103 0109 0120 1082 1115 1118 1142 1193 1197 1222 1225 1232 1236 1239 1258 1261 1279 1295 1329 1338 1380 1384 1423 1440 1445 1466 1510 1513 1529 1537 1558 1574 1590 1594 1604 1606 1661 1665 1689 1696 1708 1760 1782 1814 1829 1871 1883 1899 1907 1910 1958 2038 2040 2305 2320 2323 2324 2351 2363 2536 BGH 0221 0294 0305 0349 BIE 0293 0517 0519 0535 0642 0827 0891 BKP 2254 2310 2509 BLM 0575 BMA 0835 0934 1014 1174 1177 1383 1407 1418 1424 1697 1732 1987 2098 2188 2194 2389 2429 2466 BMM 2076 BRS 2263 BST 0604 0614 BTV 0441 0449 BWG 0916 1240 1257 1464 1546 1557 1650 CCA 0707 0724 0876 0921 1296 1654 1679 1753 2000 2007 2015 2172 2202 2205 2237 2269 2285 2293 2298 2454 2499 2508 2525 2532 2545 2551 2559 2614 CCM 0533 0548 1068 1145

DATE : Sep 19/07 SERVICE BULLETIN No. : A320-32-1336

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OPERATOR MSN CES 0665 0754 0772 0799 0828 0838 0854 0883 0897 0909 0914 0925 0939 0967 0984 0986 1005 1028 1030 1041 1070 1072 1093 1108 1285 1303 1312 1316 1330 1345 1357 1361 1377 1386 1532 1541 1542 1551 1601 1603 1639 1778 1786 1906 1911 1964 1981 2022 2034 2036 2049 2056 2068 2155 2171 2182 2199 2212 2219 2221 2235 2239 2244 2274 2309 2315 2437 2451 2478 2493 2498 2543 2549 2562 2591 2606 2627 CIB 0774 0809 0884 0894 0905 0957 0971 1381 1402 1416 1437 1929 1968 CLI 0134 0136 0143 0146 0177 0199 0240 0241 0264 0303 0312 0992 1221 1396 1430 1550 CQH 0879 0978 1286 1372 1686 CQN 0696 0698 0704 CSA 0674 0684 1439 1450 CSC 0540 0550 0551 0556 0573 0582 0591 0872 0874 0878 0902 0912 0915 0919 1007 1013 1060 1293 1500 2313 2348 2510 2534 2597 2639 CSN 0705 0709 0710 0712 0718 0720 0722 0849 0859 0881 0895 0900 0950 0966 1035 1039 1057 1596 1614 1776 1788 1971 1974 1986 1995 2004 2008 2067 2080 2200 2203 2232 2273 2275 2334 2343 2345 2371 2408 2426 2435 2505 2521 2530 2574 2579 CSZ 0994 CTN 0258 0671 0767 0833 1009 1029 1237 1252 CYP 0035 0037 0038 0180 0256 0295 0316 1729 1768 D2F 0802 DAT 1160 1336 1388 DCS 1053 DGA 1485 1556 DKN 0932 0943 0977 2029 2077

DATE : Sep 19/07 SERVICE BULLETIN No. : A320-32-1336

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OPERATOR MSN DLH 0069 0070 0071 0072 0078 0083 0086 0093 0094 0104 0110 0111 0116 0117 0135 0137 0147 0161 0162 0172 0200 0201 0202 0209 0216 0217 0218 0267 0268 0269 0346 0382 0401 0412 0458 0468 0473 0474 0484 0493 0502 0505 0518 0560 0563 0564 0567 0595 0609 0610 0616 0623 0627 0636 0641 0651 0652 0679 0689 0692 0694 0699 0700 0717 0723 0729 0738 0744 0853 0860 0875 0887 0901 1080 1161 1188 1214 1260 1273 1337 1365 1367 DNJ 1494 EDW 0942 0947 1026 EEZ 0737 0749 1125 1852 1920 1937 1983 2001 EIN 0815 0841 0926 0991 1023 1094 1242 1394 1443 1467 2191 2206 2217 2250 2256 2272 2294 2364 2374 2399 2409 2411 2432 2486 2542 2583 2635 ETD 0350 F2I 1819 1870 2028 2373 2464 FCA 0781 0852 1306 1320 1637 1720 1777 2180 FFT 1488 1515 1560 1579 1583 1684 1743 1759 1761 1781 1803 1841 1851 1863 1876 1890 1943 1980 1997 2010 2012 2019 2030 2103 2198 2209 2236 2240 2241 2253 2258 2260 2287 2318 FHY 0132 0283 0288 0771 0855 FIN 0941 0961 1073 1107 1184 1185 1241 1309 1352 1364 1405 1470 1544 1588 1678 1712 1735 1791 1808 1913 1916 1978 1989 2065 2124 2146 2154 2208 2266 FOM 2085 2090 2112 2130 2148 2153 2173 G4I 1157 1795 2507 GBL 1428 1433 1687 1715 1723 1754 1869 1918 1969 1993 2137 2157 2462 GFA 0289 0325 0375 0407 0409 0419 0459 0466 0497 0537 GOW 0455 0471 1482 1509 GWI 0525 0579 0645 0646 0654 0794 1016 1077 1084 1089 1136 1147 1155 1170 1172 1209 1277 GWY 0427 1152 1198 1615 1725 1867 2175 2187 2325 2327 GXL 1564 1860 DATE : Sep 19/07 SERVICE BULLETIN No. : A320-32-1336

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OPERATOR MSN HDA 0633 0756 0784 0812 0877 0930 0993 1024 1253 1695 1721 1984 2021 2229 2238 2428 HEJ 0142 HVN 0590 0594 0601 0605 0607 0611 0617 0619 0648 0650 2255 2261 2267 2303 2480 IAC 0168 0179 0225 0247 0257 0308 0314 0326 0327 0336 0344 0354 0362 0376 0386 0411 0478 0480 1668 1718 IBE 0158 0173 0176 0207 0223 0224 0266 0274 0323 0356 1021 1027 1047 1059 1067 1087 1099 1101 1119 1154 1180 1200 1208 1247 1255 1262 1288 1292 1318 1347 1362 1379 1454 1461 1484 1516 1530 1540 1554 1572 1655 1674 1681 1694 1716 1736 1793 1809 1836 2104 2115 2143 2220 2225 2242 2264 2270 2311 2347 2357 2365 2381 2391 2472 2488 2563 2599 INX 0963 0968 0974 IRM 0530 0857 1202 ISS 1048 1102 1283 1305 IWD 1130 1578 1597 1657 1767 2011 JAV 0029 JBU 1123 1156 1173 1235 1270 1280 1302 1327 1398 1446 1452 1506 1528 1591 1610 1705 1739 1784 1785 1823 1827 1835 1849 1861 1868 1891 1896 1898 1904 1915 1917 1927 1948 2006 2020 2031 2042 2063 2075 2099 2125 2132 2136 2141 2147 2149 2150 2159 2160 2177 2201 2215 2231 2246 2259 2280 2284 2286 2307 2314 2336 2352 2368 2384 2386 2415 2447 2449 2461 2489 2491 2504 2520 2535 2577 2580 JCS 0211 JET 0163 0204 0215 0371 0393 0414 0421 0542 0647 0660 0816 JKK 1183 1276 1333 1349 1366 1497 1631 1682 1749 1843 1862 1914 1933 1946 1979 1998 2027 2168 2210 2223 2479 2589 JSA 2316 2356 JST 2169 2185 2197 KAC 0181 0182 0195 2046 KBR 0937 DATE : Sep 19/07 SERVICE BULLETIN No. : A320-32-1336

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OPERATOR MSN KKK 0460 0461 0640 0676 KYV 1012 2117 KZR 1042 1204 2016 2128 LAJ 1194 1690 1711 1922 2190 LAN 0990 1304 1332 1351 1355 1491 1512 1526 1548 1568 1626 1854 1858 1877 1903 2089 2096 2295 2304 2321 LBT 0112 0222 0246 0299 0301 0348 0400 0793 0970 0995 1121 1175 1744 LFO 0659 LTC 0310 0333 0359 0384 0726 LTE 0087 0088 0438 0445 0496 0580 2123 LTU 1385 1441 1493 1504 1553 1607 1629 1762 1797 1806 1838 1931 1994 2005 2009 LVG 0792 1950 1970 MAU 1592 1936 MDL 0279 0391 MEA 1878 1953 1956 1967 1977 2055 MLD 0249 0622 MNJ 0615 MON 0379 0389 0392 0446 0864 0983 1015 1045 1081 1153 1207 1370 1707 1763 1941 2105 2234 MPD 0342 0426 0662 MPH 1944 1945 2167 MSR 0165 0166 0178 0194 0198 0322 0351 0366 0680 0687 0715 0725 2070 2073 2079 2088 2094 MXA 0252 0259 0260 0261 0275 0276 0280 0291 0292 0296 0320 0321 0332 0347 0353 0357 0361 0368 0369 0373 0405 0415 0428 0430 0447 0467 0566 1229 1429 1598 1612 1618 1625 1630 1634 1673 1706 1742 1750 1805 1866 1872 1882 1925 2066 2078 2126 2248
DATE : Sep 19/07 SERVICE BULLETIN No. : A320-32-1336

REVISION No. : 01 - Jan 10/08 Page : 8 Printed in France © AIRBUS 2007 All rights reservedSERVICE BULLETIN

OPERATOR MSN MYT 0193 0424 0429 0437 0476 0677 0716 1238 1250 1411 1942 1961 1965 1972 2003 MYW 0338 0363 0444 0814 1757 NKS 1195 1438 1794 NLY 1487 NVR 2211 2216 2410 NWA 0031 0034 0040 0041 0118 0121 0125 0152 0153 0160 0171 0192 0197 0206 0208 0213 0262 0263 0272 0273 0281 0282 0297 0298 0306 0307 0318 0319 0329 0339 0340 0355 0358 0360 0367 0372 0380 0381 0387 0388 0399 0408 0410 0417 0418 0766 0778 0786 0801 0807 0818 0830 0832 0846 0903 0907 0911 0923 0962 0964 0981 0988 0996 1011 1037 1058 1062 1191 1230 1249 1324 1325 1346 1392 1414 1434 1453 1456 1483 1498 1501 1520 1535 1543 1549 1567 1570 1582 1633 1641 1646 1659 1662 1683 1685 1693 1709 1714 1738 1746 1752 1766 1774 1789 1796 1800 1810 1812 1815 1820 1824 1828 1833 1839 1875 1897 1923 1959 1976 1982 1990 2002 2013 2026 2039 2047 2082 2087 2092 2095 OHY 0313 0345 0364 0385 0663 0668 0787 0954 1004 1421 P2C 1408 P2G 0302 PAL 0706 0745 0753 0936 1063 1171 1210 2162 2183 PTI 1727 1880 1947 1955 QAF 0927 1335 QTR 0928 1566 1648 1656 1773 1895 1928 1957 2097 2107 2121 2138 2161 2288 2341 R1T 1908 RAM 2064 RBA 2023 2032 2135 2139 RJA 0675 0761 RNV 0229 RYW 0569 RZO 0795 2390 2425 DATE : Sep 19/07 SERVICE BULLETIN No. : A320-32-1336

REVISION No. : 01 - Jan 10/08 Page : 9 Printed in France © AIRBUS 2007 All rights reservedSERVICE BULLETIN

OPERATOR MSN SAS 1587 1619 1642 1675 1798 1807 1817 1848 SBI 1071 1078 1090 1091 1126 1129 1131 1164 2369 2474 SDM 1149 1167 SHJ 0910 SKB 1884 1901 SLK 0899 0969 1074 1098 1228 1422 1561 1698 2058 2252 2517 2568 SSV 1571 1605 1780 SVR 0140 0157 SWR 0520 0522 0541 0545 0562 0574 0577 0578 0585 0596 0603 0612 0621 0635 0643 0664 0673 0681 0701 0703 0713 0727 0734 0782 0987 1018 1144 1951 2024 2134 SYR 0886 0918 1032 1076 1085 1117 TAE 2014 2044 TAI 0733 0741 0747 1066 1113 1300 1334 1353 1374 1400 1523 1624 1676 1730 1934 1952 2084 2102 2118 2282 2301 2339 TAM 0243 0250 0251 0334 0335 0440 0453 0758 0976 1010 1092 1096 1103 1139 1143 1158 1215 1246 1251 1339 1368 1376 1459 1486 1518 1575 1580 1593 1595 1608 1613 1628 1652 1663 1672 1692 1703 1717 1771 1775 1801 1804 1818 1825 1826 1831 1832 1837 1855 1857 1888 2372 2393 TAP 0185 0191 0234 0395 0629 0750 0755 0763 0790 0821 0837 0870 0906 0917 0933 0945 0960 0979 0982 1034 1100 1106 1120 1127 1165 1181 1206 1231 1307 1399 1667 1713 1799 1816 2178 TAR 0119 0123 0124 0205 0370 0390 0402 0511 0869 0880 0958 0975 1187 1479 1700 TAS 0667 0739 0743 TCW 0343 0420 0425 0436 1787 1975 TCX 0714 0730 0735 TGW 2195 2204 2331 2340 THY 0553 0559 0806 0810 1002 1054 1219 1233 1856 1909 1996 2060 TNA 0538 0555 0606 0731 0746 0791 0822 DATE : Sep 19/07 SERVICE BULLETIN No. : A320-32-1336

REVISION No. : 01 - Jan 10/08 Page : 10 Printed in France © AIRBUS 2007 All rights reservedSERVICE BULLETIN

OPERATOR MSN UAL 0435 0439 0442 0450 0452 0454 0456 0457 0462 0463 0464 0465 0470 0472 0475 0479 0483 0485 0487 0489 0500 0503 0504 0506 0508 0510 0512 0523 0539 0568 0571 0587 0589 0592 0613 0638 0655 0678 0683 0686 0690 0702 0748 0751 0759 0780 0783 0788 0798 0804 0820 0824 0825 0826 0834 0836 0842 0843 0847 0850 0851 0858 0862 0865 0867 0871 0873 0882 0893 0898 0944 0948 0952 0955 0965 0980 0989 1001 1022 1031 1104 1105 1128 1146 1163 1192 1211 1243 1248 1266 1272 1282 1290 1291 1321 1341 1343 1359 1363 1401 1409 1420 1426 1427 1432 1435 1460 1469 1474 1475 1477 1495 1507 1508 1514 1522 1533 1538 1545 1555 1559 1569 1573 1581 1584 1585 1586 1600 1609 1617 1620 1627 1647 1649 1653 1664 1669 1671 1680 1688 1702 1728 1731 1737 1741 1755 1821 1840 1842 1845 1847 1865 UDC 0085 0230 UEA 0946 0949 1263 1751 USA 0844 0861 0863 0868 0885 0890 0896 0904 0922 0929 0972 0997 1019 1033 1038 1040 1044 1046 1051 1052 1055 1061 1065 1069 1095 1097 1109 1112 1114 1122 1134 1135 1141 1148 1182 1203 1205 1224 1245 1254 1264 1265 1268 1269 1275 1287 1289 1294 1297 1298 1301 1310 1311 1313 1314 1315 1317 1319 1326 1328 1331 1340 1342 1348 1354 1358 1360 1369 1371 1378 1382 1389 1391 1393 1403 1412 1417 1425 1431 1436 1442 1447 1455 1462 1465 1472 1481 1492 1496 1499 1517 1519 1521 1525 1531 1536 1539 1651 1666 1701 1704 1724 VBW 0588 VIM 2108 VKG 1881 1887 1889 1921 1932 1954 1960 VLE 0189 0190 VLG 1413 1769 2114 2207 2227 2388 2407 VLK 0528 VLU 2156 2164 VOI 1140 1159 VUN 1017 WGT 1212 WHT 1256 WZZ 0839 0892 1635 1834 1892 1902 DATE : Sep 19/07 SERVICE BULLETIN No. : A320-32-1336

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OPERATOR MSN XLF 0311 0653 0657 0973 (c) Effectivity by MSN and Kit/Configuration The Kits and configurations applicable to these MSNs are given at the end of this list 0002-0008 0010 0012-0014 0016-0017 0019-0021 0029 0031 0033-0044 0052-0055 0059 0061-0073 0076-0078 0081-0088 0091 0093-0094 0098-0104 0108-0237 0239-0270 0272-0373 0375-0395 0399-0415 0417-0422 0424-0430 0434-0450 0452-0468 0470-0480 0482-0485 0487-0489 0491 0493-0498 0500-0535 0537-0546 0548-0601 0603-0631 0633-0707 0709-0788 0790-1185 1187-1277 1279-1598 1600-1659 1661-1812 1814-1821 1823-1829 1831-1918 1920-1929 1931-1938 1940-1984 1986-1990 1993-2016 2018-2024 2026-2034 2036 2038-2042 2044-2049 2052 2054-2058 2060-2061 2063-2070 2072-2080 2082-2099 2101-2108 2110 2112-2118 2121-2128 2130-2169 2171-2175 2177-2180 2182-2183 2185 2187-2188 2190-2195 2197-2212 2215-2217 2219-2223 2225-2227 2229 2231-2244 2246-2248 2250 2252-2256 2258-2264 2266-2267 2269-2270 2272-2275 2278 2280 2282 2284-2288 2290 2293-2295 2298 2301-2305 2307 2309-2316 2318 2320-2321 2323-2325 2327 2330-2331 2334 2336-2337 2339-2343 2345 2347-2349 2351-2352 2356-2357 2359 2363-2365 2368-2369 2371-2374 2381 2384 2386 2388-2391 2393 2397 2399 2405 2407-2411 2415-2416 2421-2422 2425-2426 2428-2430 2432 2435 2437 2447 2449 2451 2454 2458-2459 2461-2462 2464 2466 2472 2474 2478-2480 2482 2486 2488-2489 2491 2493-2494 2498-2499 2504-2505 2507-2510 2517 2520-2521 2525 2530 2532 2534-2536 2542-2543 2545 2547 2549 2551 2559 2562-2563 2568 2570 2574 2577 2579-2580 2583 2589 2591 2595 2597 2599 2606 2613-2615 2627 2630 2635 2639 2669 2690 KIT No. QTY PER A/C CONFIGURATION None 01 NOTE : Config. 01 is valid for all the aircraft given in the effectivity of this Service Bulletin as a standard configuration. (3) Spares BSCU C20216332292C BSCU C202163372D32 BSCU C202163382D32 **B. C O**  **N C**  **U R**  **R E**  **N T**  **R E**  **Q U**  **I R**  **E M**  **E N**  **T S**  Accomplishment of this Service Bulletin requires the prior or simultaneous accomplishment of the following Service Bulletin or the equivalent production modification : Service Bulletin No. A320-32-1124 Mod. No. 24449P3588 **C. R E** **A S**  **O N**  (1) History DATE : Sep 19/07 SERVICE BULLETIN No. : A320-32-1336

REVISION No. : 01 - Jan 10/08 Page : 12 Printed in France © AIRBUS 2007 All rights reservedSERVICE BULLETIN

In the recent past years, some operators have reported cases of loss of braking efficiency during landing in normal braking mode with the Autobrake mode selected beforehand. For some cases it was found that for some main landing gear tires, the actual rolling radius was smaller than the Braking and Steering Control Unit (BSCU) datum, affecting the braking efficiency at low speed. Two other cases of loss of braking efficiency were due to a lack of Autobrake selection logics robustness. In 2005 a lateral runway excursion occurred on an A320 aircraft. Investigation has shown that the aircraft landed with the nose wheels at around 20 degrees. During subsequent tests on the removed BSCU, a BSCU hardware failure was found, affecting the monitoring function, including the system reconfiguration management. This Service Bulletin is issued to improve operation of the braking and steering systems on aircraft equipped with conventional BSCU : - Standard 7 (PN C20216332292C) - Standard 9 (PN C202163372D32) - Standard 9.1 (PN C202163382D32) (2) Objective/Action This Service Bulletin is published to advise all operators of A319, A320 and A321 aircraft equipped with conventional BSCU of the issue of MESSIER-BUGATTI Service Bulletin No. C20216-32-3289. This Service Bulletin requires incorporation of software changes by modifying the On Board Replaceable Modules (OBRMs) of the BSCU. This BSCU will be modified and re-identified with new PN C202163392E34. NOTE : For the aircraft listed in the effectivity but not fitted with a conventional BSCU, the operator shall refer to Service Bulletin No. A320-32-1335 (Mod. No. 36853P9655) introducing BSCU Standard L4-9 (PN E21327005). This new version is obtained either by replacement of the OBRMs or replacement of the BSCU. (3) Advantages Accomplishment of this Service Bulletin consists in introducing a new BSCU version (Standard 10) which includes the following improvements : - improvements of the BSCU hardware failure monitoring including system reconfiguration management, - robustness improvements of the BSCU/tyre compatibility to restore margin in the frame of the correction of the loss of braking efficiency at low speed, - braking system re-configuration in case of an open-circuit detected on one normal brake servo-valve, DATE : Sep 19/07 SERVICE BULLETIN No. : A320-32-1336

REVISION No. : 01 - Jan 10/08 Page : 13 Printed in France © AIRBUS 2007 All rights reservedSERVICE BULLETIN

- consolidation of the steering disconnection logic, allowing cancellation of Flight Crew Operating Manual (FCOM) TR 746, - robustness improvement of the Autobrake selection logics, - Autobrake logic improvements :

. Increased disconnection threshold of A/B LOW and MED modes with one pedal depressed. . Inhibition of A/B MAX engagement on ground at low speed. . Inhibition of A/B MAX selection in flight. - modification of the allowable maximal deceleration in case the 3 Air Data/Inertial Reference Unit (ADIRU)’s are not available, - correction of the Autobrake loss at touch down in case of spurious landing gear lever information, - rewording of some BITE messages, - other minor changes. (4) Operational/Maintenance Consequences Installation of BSCU Standard 10 allows cancelling FCOM TR 746 if not already cancelled by Mod. No. 35249J2649 (Service Bulletin No. A320-32A1293) embodiment. **D. D E**  **S C**  **R I**  **P T**  **I O**  **N** To accomplish this Service Bulletin it is necessary to : (1) Config. 01 NOTE : To accomplish this Service Bulletin you have two possibilities : - either you modify the BSCU as described in PLANNING INFORMATION paragraph D.(1).(a) below, - or you replace it as described in PLANNING INFORMATION paragraph D.(1).(b) below. (a) In the FWD electronics rack 90VU, modify the BSCU by replacement of the OBRMs. (b) In the FWD electronics rack 90VU, replace the BSCU. **E. C O**  **M P**  **L I**  **A N**  **C E**  (1) Classification Mandatory (2) Accomplishment Timescale DATE : Sep 19/07 SERVICE BULLETIN No. : A320-32-1336

REVISION No. : 01 - Jan 10/08 Page : 14 Printed in France © AIRBUS 2007 All rights reservedSERVICE BULLETIN

Accomplishment of this Service Bulletin is required before September 30/2009. Accomplishment of this Service Bulletin is expected to be rendered mandatory by the issue of an Airworthiness Directive (AD) published by the European Aviation Safety Agency (EASA). It is anticipated that the AD will confirm the timescale given above but reference should be made to the AD for confirmation of the mandated accomplishment timescale. **F. A P**  **P R**  **O V**  **A L**  Approved under EASA Design Organisation Approval No. EASA.21J.031. If an aircraft listed in the effectivity has a modification or repair embodied that is not of AIRBUS origin, and which affects the content of this Service Bulletin, the operator is responsible for obtaining approval by its airworthiness authority for any adaptation necessary before incorporation of the Service Bulletin. **G. M A**  **N P**  **O W**  **E R**  The manpower estimates given in this Service Bulletin are based on the direct labor cost to do the work. These estimates assume that the work will be done by experienced personnel, and may need to be revised upwards to suit operator’s circumstances. The estimates do not include the time to prepare, plan or inspect the work. Manufacture and procurement of parts and tools, drying times for paints, sealants, etc, and general administration work are also not included. Config. 01 , on aircraft Get access 0.5 Replacement of the BSCU 1.0 Test 0.5 Close-up 0.5 **TOTAL MANHOURS 2.5 ELAPSED TIME (HOURS) 2.5**  Config. 01 , on computer Modification of the OBRMs -- **TOTAL MANHOURS Refer to MESSIER-BUGATTI Service Bulletin No. C20216-32-3289**  **ELAPSED TIME (HOURS) Refer to MESSIER-BUGATTI Service Bulletin No. C20216-32-3289**  **H. W E**  **I G**  **H T**  **A N**  **D B** **A L** **A N**  **C E**  Not changed
DATE : Sep 19/07 SERVICE BULLETIN No. : A320-32-1336

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**I. E L**  **E C**  **T R**  **I C**  **A L**  **L O** **A D**  **D A** 

**T**

**A** Not changed **J. R E**  **F E**  **R E**  **N C**  **E S**  Aircraft Maintenance Manual (AMM) : 32-42-34 32-46-00 Elec. Std. Practices Manual (ESPM) : 20-55-00 MESSIER-BUGATTI Service Bulletin No. C20216-32-3289 Service Bulletin No. A320-32-1124 Service Bulletin No. A320-32A1293 **K. P U**  **B L**  **I C**  **A T**  **I O**  **N S**  **A F**  **F E**  **C T**  **E D**  Aircraft Maintenance Manual (AMM) : 32-42-00 Aircraft Wiring List (AWL) Flight Crew Operating Manual (FCOM) Illustrated Parts Catalog (IPC) : 32-42-08 32-42-34 Trouble Shooting Manual (TSM) : 32-42-00 32-51-00 This Service Bulletin has an operational impact. Please inform AIRBUS, at least four weeks in advance, in case you need your operational documentation to be amended by an intermediate revision prior to Service Bulletin embodiment. For this purpose, please request the intermediate revision by fax, telex or mail to : SDC3, AIRBUS - Customer Services Directorate Fax No. 33 (0) 5 61 93 28 06 Sita No. TLSBP7X E-mail sb.reporting@airbus.com These amendments will be confirmed by the next normal revision of operational documentation, once your Service Bulletin accomplishment report has been sent, as usual, to our Customer Services Directorate (SDC3).

DATE : Sep 19/07 SERVICE BULLETIN No. : A320-32-1336

REVISION No. : 01 - Jan 10/08 Page : 16 Printed in France © AIRBUS 2007 All rights reservedSERVICE BULLETIN

**L. I N**  **T E**  **R C**  **H A**  **N G**  **E A**  **B I**  **L I**  **T Y**  **/ M**  **I X** **A B**  **I L**  **I T** **Y** DESCRIPTION OLD PART No. NEW PART No. INT MIXABILITY BSCU C20216332292C C202163372D32 C202163382D32 C202163392E34 01 Not applicable NOTE : For definitions of interchangeability codes in column INT. refer to ATA Common Support Data Dictionary (CSDD), Chapter 2.

DATE : Sep 19/07 SERVICE BULLETIN No. : A320-32-1336

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DATE : Sep 19/07 SERVICE BULLETIN No. : A320-32-1336

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**2. M A**  **T E**  **R I**  **A L**  **I N**  **F O**  **R M**  **A T**  **I O**  **N A. M**  **A T**  **E R**  **I A**  **L -**  **P R**  **I C**  **E A**  **N D**  **A V** 

**A I**  **L A**  **B I**  **L I**  **T Y**  This Service Bulletin is the subject of an AIRBUS retrofit campaign. **B. I N**  **D U**  **S T**  **R Y**  **S U**  **P P**  **O R** **T I**  **N F**  **O R**  **M A**  **T I**  **O N**  For the organisation of this retrofit, operators are kindly requested to contact AIRBUS retrofit management department. AIRBUS CUSTOMER SERVICES DIRECTORATE 1 Rond Point Maurice Bellonte 31707 BLAGNAC CEDEX FRANCE Tel : (33) 5 67 19 06 22 Telex : AIRBU 530526 F Fax : (33) 5 61 93 27 45 Modification of parts/equipment is at no charge for the Operator. AIRBUS will also credit the man-hours indicated in this Service Bulletin at the Operator’s agreed in-house warranty labor rate upon receipt of a warranty claim. **C. L I**  **S T**  **O F**  **C O**  **M P**  **O N**  **E N**  **T S**  None **D. L I**  **S T**  **O F**  **M A**  **T E**  **R I**  **A L**  **S -**  **O P**  **E R**  **A T** **O R**  **S U**  **P P**  **L I**  **E D**  (1) Consumable Materials None (2) Components ITEM NEW PART No. QTY UM KEYWORD ITEM OLD PART No. INT INST DISP C202163392E34 1 BSCU C20216332292C C202163372D32 C202163382D32 01 (01)

NOTE : For definitions of interchangeability codes in column INT. refer to ATA Common Support Data Dictionary (CSDD), Chapter 2. NOTE(01) Modification of removed equipment should be negotiated directly with MESSIER-BUGATTI as per instructions given in Service Bulletin No. C20216-32-3289. **E. P A**  **R T** **S T** **O B**  **E R**  **E -**  **I D**  **E N**  **T I**  **F I**  **E D**  **B Y**  **T H**  **E O**  **P E**  **R A**  **T O**  **R** Refer to MESSIER-BUGATTI Service Bulletin No. C20216-32-3289. DATE : Sep 19/07 SERVICE BULLETIN No. : A320-32-1336

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**F. T O**  **O L**  **I N**  **G -**  **P R**  **I C**  **E A**  **N D**  **A V** 

**A I**  **L A**  **B I**  **L I**  **T Y**  To accomplish this Service Bulletin it is necessary to use the tools listed in MESSIER-BUGATTI Service Bulletin No. C20216-32-3289. **G. S P**  **E C**  **I A**  **L T** **O O**  **L S**  None

DATE : Sep 19/07 SERVICE BULLETIN No. : A320-32-1336

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**3. A C**  **C O**  **M P**  **L I**  **S H**  **M E**  **N T**  **I N**  **S T**  **R U**  **C T**  **I O**  **N S**  **A. G E**  **N E**  **R A**  **L** WARNING : MAKE SURE THAT YOU OBEY ALL THE WARNINGS AND ALL THE CAUTIONS INCLUDED IN THE REFERENCED PROCEDURES. CAUTION : ALWAYS OBEY THE PRECAUTIONS THAT FOLLOW TO KEEP ELECTRICAL WIRING IN A SATISFACTORY CONDITION (ELECTRICALLY AND MECHANICALLY SERVICEABLE). WHEN YOU DO MAINTENANCE WORK, REPAIRS OR MODIFICATIONS, ALWAYS KEEP ELECTRICAL WIRING, COMPONENTS AND THE WORK AREA AS CLEAN AS POSSIBLE, TO DO THIS : - PUT PROTECTION, SUCH AS PLASTIC SHEETING, CLOTHS, ETC; AS NECESSARY ON WIRING AND COMPONENTS. - REGULARLY REMOVE ALL SHAVINGS, UNWANTED MATERIAL AND OTHER CONTAMINATION. THESE PRECAUTIONS WILL DECREASE THE RISK OF CONTAMINATION AND DAMAGE TO THE ELECTRICAL WIRING INSTALLATION. IF THERE IS CONTAMINATION REFER TO ESPM 20-55-00. CAUTION : THE ELECTROSTATIC DISCHARGE PRECAUTIONS DESCRIBED IN ARINC REPORT 606 ARE RECOMMENDED. (1) Preparation (a) Config. 01 1 Do the preparation procedure as specified in the removal/installation of the BSCU (10GG) (Refer to AMM 32-42-34, Page block 401). (2) Standard Practices None **B. M O**  **D I**  **F I**  **C A**  **T I**  **O N**  (1) Config. 01 NOTE : To accomplish this Service Bulletin you have two possibilities : - either you modify the BSCU as described in ACCOMPLISHMENT INSTRUCTIONS paragraph B.(1).(a) below, - or you replace it as described in ACCOMPLISHMENT INSTRUCTIONS paragraph B.(1).(b) below. (a) In the FWD electronics rack 90VU, modify the BSCU by replacement of the OBRMs. 1 For the replacement of the OBRM’s, refer to MESSIER-BUGATTI Service Bulletin No.C20216-32-3289. (b) In the FWD electronics rack 90VU, replace the BSCU. DATE : Sep 19/07 SERVICE BULLETIN No. : A320-32-1336

REVISION No. : 01 - Jan 10/08 Page : 21 Printed in France © AIRBUS 2007 All rights reservedSERVICE BULLETIN

Refer to AMM 32-42-34, Page block 401 1 Remove : FIN 10GG 1 BSCU C20216332292C

or FIN 10GG 1 BSCU C202163372D32

or FIN 10GG 1 BSCU C202163382D32 2 Install : FIN 10GG 1 BSCU C202163392E34 **C. T E**  **S T**  (1) Config. 01 (a) After the replacement of the OBRM’s : 1 Do the BITE test of the BSCU - LRU identification (Refer to AMM 32-46-00, Page block 501).

a Make sure that the PN’s are correct. 2 Do the BITE test of the BSCU (Refer to AMM 32-46-00, Page block 501). (b) After the replacement of the BSCU : 1 Do the test after removal/installation of the BSCU (10GG) (Refer to AMM 32-42-34, Page block 401). **D. C L**  **O S**  **E U**  **P** (1) Config. 01 (a) Do the close-up procedure as specified in the removal/installation of the BSCU (10GG) (Refer to AMM 32-42-34, Page block 401).

DATE : Sep 19/07 SERVICE BULLETIN No. : A320-32-1336

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**E. D O**  **C U**  **M E**  **N T**  **A**

**T I**  **O N**  Write in the applicable aircraft records that you have done all the work given in the Service Bulletin.

DATE : Sep 19/07 SERVICE BULLETIN No. : A320-32-1336

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DATE : Sep 19/07 SERVICE BULLETIN No. : A320-32-1336

REVISION No. : 01 - Jan 10/08 Page : 24 Printed in France © AIRBUS 2007 All rights reservedSERVICE BULLETIN REPORTING SHEET

**TITLE : LANDING GEAR - NORMAL BRAKING - INSTALL BSCU STD 10 BY SB ONLY. MODIFICATION No. :**  27773P5518, 31106P7005, 32500P7810, 36994P8867 P l e a s e c o m p l ete t h e a p p ro p r i ate i te m (A o r B ) : A - SB W I L L B E embodied .................................................................. YES/NO (if NO please comment) If YES, aircraft concerned (as per SB effectivity by default) and planned dates (month/year) of embodiement:

............................................................................................................................... ..............................................

............................................................................................................................... .............................................. B - SB H AS B E E N embodied on aircraft: ............................................................................................................

............................................................................................................................... ..............................................

............................................................................................................................... .............................................. Operator comments:..............................................................................................................

..............................

............................................................................................................................... ..............................................

............................................................................................................................... .............................................. From Airline: ...................................................................................................................

..................................... Name/Title: ....................................................................................................................

...................................... Signature:..................... Date: ..................................................... I f o p e rat i o n a l d o c u m e n t at i o n i s affe cte d ( s e e Pa ra g ra p h 1

. K of t h i s S B ) : If information is needed prior to next normal revision or prior to SB embodiment, please indicate required service(s): Either : Advance data................................................................................... YES/NO Or : Intermediate/Temporary revision ..................................................... YES/NO I m p o rt a n t I n fo r m at i o n : This SB will only be incorporated in your maintenance and operational documentation if this sheet is returned to Airbus and signed by a duly authorised representative. With the next feasible revision, this will result in - updating of maintenance documentation to show pre and post SB data. - updating of maintenance and operational documentation to show post SB data after embodiment. If this SB requires previous or simultaneous accomplishment of other SBs, Airbus shall automatically include them in the manual revisions. Refer to SIL 00-037 for detailed information. P l e a s e re t u r n t h i s c o m p l e te d s h e e t to : **AIRBUS CUSTOMER SERVICES DIRECTORATE**  **1 Rond Point Maurice Bellonte 31707 BLAGNAC CEDEX FRANCE**  Attn: SDC32 Technical Data and Documentation Services FAX: (+33) 5 61 93 28 06 e-mail: sb.reporting@airbus.com Or via your Resident Customer Support Office. Alternatively, SB lists via letters or fax are also accepted.

DATE : Sep 19/07 SERVICE BULLETIN No. : A320-32-1336

REVISION No. : 01 - Jan 10/08 Page : 1 of 1 Printed in France © AIRBUS 2007 All rights reservedSERVICE BULLETIN REPORTING QUALITY

**TITLE : LANDING GEAR - NORMAL BRAKING - INSTALL BSCU STD 10 BY SB ONLY. MODIFICATION No. :**  27773P5518, 31106P7005, 32500P7810, 36994P8867 Use this form to tell us what is your perception of the quality of this Service Bulletin.The reported data that you provide us will be used to analyse areas of difficulties and to take corrective action to futher improve the quality of our Service Bulletins. We thank you for the time you have taken in completing this form. (Please rate on a scale of 1 to 4, with 4 being the highest score) -Quality rating of this SB 4 3 2 1 -Quality rating of the Accomplishment Instructions 4 3 2 1 -Quality rating of the Illustrations 4 3 2 1 -Is this SB easy to understand ? Y / N If you have had difficulties in the accomplishment of this SB please quote below the area(s) and give a short description of the issue.

Planning Material Instructions X Effectivity X Kit Content X Preparation X Reason X List of Materials X Mod/Inspection X Manpower Operator Supplied X Test X References X Re-identification X Close-up X Publication X Tooling X Illustrations C o m m e n ts :

Operator : Date: Name/Title : Please return this form to: **AIRBUS CUSTOMER SERVICES DIRECTORATE**  **1 Rond Point Maurice Bellonte 31707 BLAGNAC CEDEX FRANCE**  Attn: SEM4 Service Bulletins Management FAX: (+33) 5 61 93 42 51 Or via your Resident Customer Support Office. DATE : Sep 19/07 SERVICE BULLETIN No. : A320-32-1336

REVISION No. : 01 - Jan 10/08 Page : 1 of 1 Printed in France © AIRBUS 2007 All rights reserved